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Taya2010 [7]
3 years ago
11

Hich expression is equivalent to 21x + 9 - 3x

Mathematics
1 answer:
tiny-mole [99]3 years ago
5 0
(21x-3x)+9
Answer is 18x+9  

hope i helped if did plz mark as brainliest^-^
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The sum of 4 consecutive integers is -18. what is the greatest of these integers?
Mashcka [7]
Okay. What I know so far is that the integers will all be negative. We don't have to count too high to do this. So for this, it's like pick any four numbers. Or you could divide 18 by half and find the addition problems that you know would equal 9. What I see is that -3 + -4 + -5 + -6 = -18. There are all four consecutive integers. The trend is that you can draw a line tracing to the number of the opposite side of the question and you can see they each equal nine. Most people would be tricked and say 6, because they ignore the negative symbol, but here's the catch. The lower the number in front of the negative sign, the greater it is. So in this case, the lowest number in front of the negative symbol is 3, which would also mean that -3 is the highest when it comes to all of these numbers. So -3 is the greatest out of the four consecutive integers.
3 0
4 years ago
100 POINTS (answer to get brainliest) What is the volume of the box if it is scaled down by a factor of 110?
Tanya [424]

Answer:

Volume is length times width times height. So, you would need to do 9 times 3 (27) times 10 (270). Then, you would divide by 10, because it is scaled down by 1/10, leaving you with 27.

Step-by-step explanation:

3 0
3 years ago
If a watch cost $40 and you must pay 6.5% sales tax, how Mich will the tax be?
trasher [3.6K]

Hello


The tax would be 6.15 because 40/6.5 is 6.15


hope this helps

plz mark me as brainliest

5 0
3 years ago
Solve the differential equation dy/dx= y^2/x^3 for y=f(x) with the condition y(1) = 1.
Gennadij [26K]
We will use seperation of variables

tmes both sies by 1/(y^2)
times both sides by dx

we get

1/(y^2)dy=1/(x^3)dx
integrate both sides
-1/y=1/(2x^2)+c

initial condition, (1,1)
-1/1=1/(2(1^2))+c
-1=1/2+c
-3/2=c


-1/y=1/(2x^2)-3/2
solve for y
-1=y(1/(2x^2)-3/2)
y=-1/(1/2x^2-3/2)
y= \frac{2x^2}{3x^2-1}
6 0
3 years ago
Please help i tried so hard and its not right
garik1379 [7]

Answer:

<u>10.75%</u>

Step-by-step explanation:

so, you need the total price, which would be 17,850+2,150=20,000 as the whole price of the car, then you need to find what precent 2,150 is of 20,000. then use this formula for finding the precent.

2150/20000 times 100%=10.75%

8 0
2 years ago
Read 2 more answers
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